Question

It is theoritically possible for a gene from any organism to function in any other organism. Why is this possible?

• A. All organisms have ribosomes.
• B. All organisms have the same genetic code.
• C. All organisms are made up of cells.
• D. All organisms have similar nuclei.

Answer 1

The correct option is B All organisms have the same genetic code.

Theoretically all organisms have the same genetic code and thus a gene from one organism can function in any other organism.

• A genetic code links the nucleotide sequence of DNA to be decoded into amino acids of proteins. It consists of 64 triplet of nitrogen bases with 4 different bases (wherethe base could be adenine, guanine, cytosine and thymine).
  
• Each codon codes for an amino acid. Multiple such codon sequence, codes for a particular amino acid sequence finally forming a protein.
  
• Since all genes consists of these genetic codes, which happens to be universal.
  

So, the correct answer is option B.